Vibrator



June-1o, 1930. G. B PICKOP 1,762,416

VIBRATOR Filed oct. 4, 1927 2 shee1s-shee1 1 June 1o, 1930. G. B. PICKOP 1,762,416

VIBRATOR Filed Oct. 4, 1927 2 Sheets--Sheet 2 'i u' L l.. M D Il l n h l i l l f U ,L 26 /7 26 7,2 2/ 12 Patented .lune l0, 192i@ LYGZAl GEORGE B. PICKOP, OF NEW' HAVEN, CONNECTICUT, ASSIGNOR TO MALI/)ETABLE IRGN FlTINGS CGMEANY, OF BRANFORD, CONNECTICUT VIER-ATCB,

Application lecl ctober 4, 1927. Serial No. 223,979.

This invention relates to vibrators, and more-especially to that type of vibrators operated by a motive fluid, such as compressed air, and comprising a shell creasing having 1 j 5 a cylinder Within which is mounted a vibrator piston striking` against the heads of the cyl inder. The use of such` vibrators has increased materially in recent years owing to the fact that such a device has been found adaptable to shaking, jarring or rapping operations of many different kinds. @ne of its largest uses, however, is in the foundry Where it is used in connection With sand riddling operations, flask rapping and pot rapping operations, andalso in shaking the cores out of castings, especially those of larger sizes.

It has been common in the past to provide such vibrators with attaching ends, Which may be bolted to the devices `within which the vibrator is used, and in some instances, the vibrator has been made a part of a hook Which can be attached to foundry flasks or the like.

I' have found it very desirable, however, to provide the vibrator body itself with an attaching end which may be readily coupled With a foundry flask, pot or casting, by being merely hooked over apart thereof, which connection not only transmits the vibrations efficiently to the article upon which the Work is adapted to be done, but which also provides for an easy removal of the vibrator when the Work is done.t In connecting the vibrator in various relations, it hasbeen found that `one kind of an attaching head or hook is not the most efficient in all cases, and l have proposed, therefore, to provide an attaching head upon eachend ofthe vibrator, one being adapted for use with certain objects, and the other being moresuitable for use in other relations. Such an arrangement not only providesan instrument of Wider use than if only one attaching head were provided, and, therefore, not only permits one vibrator to accomplish the Work of tivo, but

it prevents duplication in equipment and Will often, particularly When the tvvo attaching heads are duplicates, prevent a cessation of the Work owing to the breaking of one of the heads.

These vibrators are often made in very large sizes, the pistons sometimes `being, as

much as six to eight inchcsin diameter, and as they are very heavy it is :nlvantageousto provide means of suspending` them from a traveling crane or the like, so that they may be readily transported from one` place toanother.

One object of my invention, therefore, is to provide a vibrator having attaching ends upon the heads thereof, the ends being so constructed that they may be readily attached to and removed from various devices to be operated upon, and when so attached will efficiently transmit vibrations thereto.

Another object of my invention is to provide a vibrator of the type described with attaching' heads of different character so as to adapt the same vibrator to various uses, and thereby prevent duplication in equipment and enlarge the scope of uses to which the instrument may be put.

Other objects of the invention consist inproviding a vibrator wherein the heads of the vibrator themselves are provided With attaching devices, so that the latter become a unitary part of the iustrinnent, and to prov-ide means by which the vibrator may be suV pended and readily transported from place to place by power ope ated devices to facilitate its use.

A still further object of the invention is the provision of a double ended vibrator hav-- to be vibrated.

Fig. 3 is a top plan view of the vibrator;

Figs. 4 and 5 are left and right hand end views respectively of the device as shown in Fim 3.

s an illustration of a preferred embodiment of my invention, I have shown a vibrator body 10, having heads 11 and 12,'at opposite ends thereof. it will be understood that the vibrator body 10 is provided with a cylindrical chamber within which is mounted a reciprocating piston 10a, shown in dotted lines in l-"ig, 2, which acts upon both heads 11 and 12.

The head 12 is provided, in this instance, with an integrally formed attaching end in the form of a jaw 13, provided with an opening 14- to permit it to be hooked over the edge of a flask or pot, or a part of a casting As will be apparent when the jaw 13 is hooked over the edge of a flask,

`for'eXample, the weight of the vibrator will i tendk to tilt the latter about the flask edge so that the shoulder 15 will firmly abut against 'the side of the flask while firm con tact will likewise b e effected between the upper edge of the flask and the corner 16 of the jaw. llhile, as will be hereinafter eX- plained, the vibrator is provided with means by which it may be suspended from a crane Avso hook or the like, by a chain, for transportation from oneplace to another', it is not intended to be so suspended during its operation, as a more eiiicient result will be obtained when the weight of the vibrator is carried by the article itself, as this weight not only tends to make a firm contact between the vibratorv and theV article, but also none of the vibration is lost in the suspending means.

The opposite head 11 of the vibrator is also provided with an att-aching jaw 17, but one of a different type. This aw is provided with an opening 18, the lower side 19 thereof llaving a V-shaped formation 20, which will be found useful in receiving and hooking over such articles'as lathe bed castings or the like, for shaking the cores out of such castings.

Between the heads 11 and 12 is mounted the vibrator body 10, which is secured in place by a number of bolts 21, passed through openings in the heads and receiving nuts on their protruding ends. Also connecting the two heads is a bail or the like 22, provided with an opening 23 whereby the vibrator may be supported by a chain or cable and moved from place to place. At each end the bail is provided with spaced eyes y26 which receive the ends of certain of the bolts 21 to secure the bail firmly to the vibrator.

In Fig. 1 of the drawings I have shown a hook 24, received in the opening 23, and supported by a chain 25, which may be carried by a traveling crane or the like. In this figure, the jaw 13 is shown engaged with a boiler casting for knocking the core out of the lat-ter, and it will be apparent that the weight of the vibrator is supported by the casting so that none of the eiect of the vibrations of the piston will be lost in the links of the chain 25 or in the connection between the hook 24 and the opening 23.

By providing a vibrator between a pair of attaching jaws in this manner the scope of use of the device is widened, as one instrument may be used in a number of relations, and moreoveg'r, when the aws are similar, if one becomes broken the vibrator may be turned end for end, and the other used.

While l have shown anc described a preferred embodiment of my invention, it is to be understood that it is not to be limited to all of the rdetails shown, but is capable of modification and variation within the spirit of the invention and the scope of the appended claims.

llilhat I ciaim is:

l 1. in a rappin@` device, a pair of spaced heads, a vibrator body mounted between said heads, and means Vfor supporting the device comprising a member spanning said heads and having its ends secured thereto and at taching means at an intermediate portion of said member.

2. In a rapping device, a pair of spaced heads, a j aw member on and rigid with each of said heads, a vibrator body mounted between the heads and secured thereto, a rapping member acting on both said heads, and means for silspending the device, and common means for attaching said heads to the vibrator body.

3. ln a rapping device, a pair of spaced heads, an attaching jaw member provided upon and rigid with each of said heads, a vibrator mounted between the heads, a rapping member acting on bothsaid heads and means passing through said heads and embracing the vibrator body to clamp the parts together.

Li. In a rapping device, a vibrator body having a head at each end thereof, an attaching` member upon and rigid with each of said heads, a piston within the body actpassing through the heads and embracing the vibrator body to secure the parts together, a hooklike jaw member attached to eachend of the vibrator, a movable member within the body acting upon both said heads, and a supporting member secured tocertain of said bolts to support the vibrator when out of operation. y

(i. In a rapping device, a vibrator body having a head at each end thereof, a movable member acting upon both of said heads, and bolts passing through the heads and einbracing the vibrator body to secure the parts together, a hooklike jaw member attached to each end of the vibrator, and a supporting member secured to certain of said bolts tosupport the vibrator when out of operation, one of said jaw members being adapted to be used in certain relations and the other being usable in other relations.

7. In a rapping device, a vibrator body having therewithin a movable reciprooable nart and having upon each end thereof and in line With the moving part a hooklke jaw member adapted to support the vibrator from an object to be vibrated, said j aw members being of different types whereby the vibrator is adapted to a variety of uses.

In Witness whereof, I have hereunto set my hand this 29th clay of September, 1927.

' GEORGE B. PICKUP. 

